EP0803607B1 - Rouleau à réglage de la flexion - Google Patents

Rouleau à réglage de la flexion Download PDF

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Publication number
EP0803607B1
EP0803607B1 EP97105205A EP97105205A EP0803607B1 EP 0803607 B1 EP0803607 B1 EP 0803607B1 EP 97105205 A EP97105205 A EP 97105205A EP 97105205 A EP97105205 A EP 97105205A EP 0803607 B1 EP0803607 B1 EP 0803607B1
Authority
EP
European Patent Office
Prior art keywords
deflection
roll according
controllable roll
slide
controllable
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP97105205A
Other languages
German (de)
English (en)
Other versions
EP0803607A2 (fr
EP0803607A3 (fr
Inventor
Rolf Dr.-Ing. Van Haag
Peter Dornfeld
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Voith Paper GmbH and Co KG
Original Assignee
Voith Paper Patent GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Voith Paper Patent GmbH filed Critical Voith Paper Patent GmbH
Publication of EP0803607A2 publication Critical patent/EP0803607A2/fr
Publication of EP0803607A3 publication Critical patent/EP0803607A3/fr
Application granted granted Critical
Publication of EP0803607B1 publication Critical patent/EP0803607B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C13/00—Rolls, drums, discs, or the like; Bearings or mountings therefor
    • F16C13/02—Bearings
    • F16C13/022—Bearings supporting a hollow roll mantle rotating with respect to a yoke or axle
    • F16C13/024—Bearings supporting a hollow roll mantle rotating with respect to a yoke or axle adjustable for positioning, e.g. radial movable bearings for controlling the deflection along the length of the roll mantle
    • F16C13/026—Bearings supporting a hollow roll mantle rotating with respect to a yoke or axle adjustable for positioning, e.g. radial movable bearings for controlling the deflection along the length of the roll mantle by fluid pressure
    • F16C13/028—Bearings supporting a hollow roll mantle rotating with respect to a yoke or axle adjustable for positioning, e.g. radial movable bearings for controlling the deflection along the length of the roll mantle by fluid pressure with a plurality of supports along the length of the roll mantle, e.g. hydraulic jacks
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G1/00—Calenders; Smoothing apparatus
    • D21G1/02—Rolls; Their bearings
    • D21G1/0206—Controlled deflection rolls
    • D21G1/0213—Controlled deflection rolls with deflection compensation means acting between the roller shell and its supporting member
    • D21G1/022—Controlled deflection rolls with deflection compensation means acting between the roller shell and its supporting member the means using fluid pressure

Definitions

  • the invention relates to a bending roller with a Roll shell, which has support elements on a support is supported, with pressure chambers between the Support elements and the support are provided and each Pressure chamber is connected to a supply line.
  • Such bending adjustment rollers also called deflection adjustment rollers are referred to cf. EP 0 451 470 A, are used in roller machines, such as calenders or smoothing units, to continuous material webs, in particular Paper webs to apply pressure.
  • roller machines such as calenders or smoothing units
  • continuous material webs in particular Paper webs to apply pressure.
  • a bending adjustment roller with a counter roller Nip through which the material web is guided.
  • the support elements are to keep them as even as possible provided with which the pressure ratios can be set in the nip.
  • the support elements are here from a pressure fluid, for example a hydraulic oil. your education is known per se.
  • the individual support elements To resolve the pressure distribution as finely as possible , it is desirable to use the individual support elements to be controlled individually or at least in small groups. There is a large number of supply lines for this necessary. The width increases with the width of the rollers Number of supply lines. The supply lines must be led through the carrier. It says there but only a limited space is available, so the Cross section of the individual supply lines cannot exceed a certain value. Larger cross sections would weaken the wearer more, so that he its support function no longer to the extent necessary can perceive.
  • the invention is based, even with one fine resolution of the pressure distribution a quick To be able to relieve the pressure chambers.
  • each pressure chamber directly with one in addition to the supply line the intended outlet channel is connected, which can be closed by a drain valve.
  • the outlet channel preferably opens into a space between Roller jacket and carrier.
  • This room becomes oil for example when using hydrostatic Support elements always get there, all the time derived so that the annular space between the roll shell and the carrier not filled with oil and largely is depressurized. So if you open the drain valve, the oil from the pressure chamber with the existing one Pressure in the space between the roller jacket and the carrier pushed out. No pressure reduction is necessary beforehand, like this for example in the supply lines of the would be the case.
  • the outlet duct has a smaller one Has flow resistance than the supply line. This will generally be accomplished can make the outlet channel shorter than the supply line has. In addition can the outlet channel also has a larger flow cross-section Mistake.
  • Each pressure chamber preferably has its own supply line and its own outlet channel. Though in many cases, it is sufficient for the individual support elements and thus the individual pressure chambers in groups summarize and control in groups. If but each support element with its own supply line provides control of the pressure distribution correspondingly easier. Relieving can also then done at a higher speed because the hydraulic fluid from each pressure chamber immediately can drain off.
  • the outlet duct preferably branches off from an intermediate duct between the pressure chamber and the supply line from. Design changes in the area of the pressure chamber are therefore not necessary. In particular, you can that have proven their worth. It is only necessary to add an additional one in the carrier Channel.
  • the drain valves are advantageously at least one Part of her body placed on the outside of the carrier. This simplifies production. Especially the moveable ones Parts can then be housed in one housing be attached to the outside of the carrier. Larger Processing of the carrier can then be avoided become.
  • drain valves offset by about 90 ° to the position of the support elements are arranged. In this position they interfere the stroke movement of the roller jacket least. A Restriction of the movement of the roll shell takes place practically not.
  • all drain valves can be operated simultaneously. If a quick disconnect becomes necessary, a single command is then sufficient to relieve the burden to be able to effect all pressure chambers.
  • a common actuator is provided is. This actuator then switches over a mechanical connection necessarily the common Safe operation of the drain valves.
  • the actuating device is preferably a slide educated. Such a slide can be opened accommodate the wearer well and operate from one end.
  • the slide advantageously has a piston-cylinder device as the drive on.
  • a piston-cylinder device can then also with hydraulic fluid be operated, which in any case with the bending adjustment roller is available. So there are no other pressure generation mechanisms necessary.
  • the slide at least is formed at one end as a piston that is slidably disposed in a cylinder. This facilitates production. A connection between the slide and the piston of the piston-cylinder device is not necessary. Rather, this is already given by the slider itself.
  • the piston can also be designed as a plunger.
  • the drain valves are preferably slide valves trained with valve spools. The flow path will released by a through hole of the valve spool via a corresponding mouth of the outlet channel is pushed. If this coverage is not established the drain valve is closed.
  • Such one Valve construction is easy to implement. Such a thing Valve is relatively easy to operate.
  • valve slides of the drain valves are preferably here Attached to each other in the axial direction. A separate one Slider is then no longer necessary.
  • the Valve spools then form the actuating device themselves.
  • each drain valve has a closure piece on that in the mouth of the outlet channel can be moved into it. There it can either be Attach to an end face to seal bring about, or it can be like a plug in the mouth are inserted, which also creates a sufficient tightness is achieved. An absolute Tightness is not required in most cases because the support elements always have a certain amount anyway Have leakage.
  • the slide has a Inclined surface acts on the locking pieces. The axial movement can then be relatively easily in a radial movement of the locking pieces.
  • the drain valves are preferably self-opening Valves trained. This is an additional security aspect. For example, if the utility fails occurs and no pressure in the piston-cylinder device open more the valves, what a quick separation of the rollers of the calender. Would you reverse the valves would be such a quick disconnect after Failure of the supply is no longer guaranteed.
  • a bending adjustment roller 1 has a roller shell 2 on, which is supported on a carrier 4 via support elements 3 is.
  • the carrier 4 can also act as an axis of the roller be designated.
  • the bend adjustment roller 1 as a jacketed roller, i.e. as a roller with Jacket stroke, trained.
  • Each support element has a pressure chamber 5, which in the present case individually with hydraulic fluid, For example, hydraulic oil can be applied.
  • the pressure chamber 5 is, as can be seen, between the Support element 3 and the carrier 4 arranged.
  • This is a supply line 6 is provided for each pressure chamber 5. Through the supply line 6, the pressure can be controlled in the pressure chamber.
  • the supply lines 6 form a tube bundle 7, which is in a central bore 8 of the carrier 4 is arranged.
  • the central bore 8 is via intermediate channels 9 with the Pressure chambers 5 connected.
  • each partition walls 10 with seals 11 between the mouths of the intermediate channels 9 in the central bore 8 arranged.
  • At each partition 10 opens one Supply line 6. This can be seen in FIG. 2 in that that the corresponding supply line 6 is no longer shown cut.
  • counter elements 12 On the side opposite the support elements 3 counter elements 12 are arranged, which also with Hydraulic fluid can be applied and on the one hand, for a faster lowering of the roll shell 2 effect and on the other hand to discharge of the roller ends.
  • a drain valve 15 is closable.
  • the drain valve 15 is in its open position shown.
  • the drain valve has a valve housing 16 which is placed on the outside of the carrier 4.
  • the drain valve 15 is offset by approximately 90 ° to the support elements 3 arranged. When the roller shell 2 is lowered, does not interfere with the drain valve 15 even if it is like shown, is attached to the outside of the carrier 4.
  • the outlet channel 14 opens when the drain valve 15th is opened, in an annular space 17 between the roll shell 2 and the carrier 4. In this annulus flows permanent with hydrostatic support elements 3 in particular Oil or other hydraulic fluid which then must be removed from there. Because a permanent drain or even a permanent pumping of oil out of it Annulus 17 takes place, prevails practically in the annulus 17 Tank pressure. Hydraulic fluid through the Outlet channel 14 is displaced from the pressure chamber 5, can then drain into the annular space 17 practically without back pressure.
  • the outlet channel 14 is relatively short. He just has to from the intermediate channel 9 to the annular space 17, i.e. to the peripheral wall of the carrier 4 lead. Even if the cross section is the same size as the cross-section of a supply line 6, the flow resistance is due the shorter length much less. So as soon as that Drain valve 15 is opened, the hydraulic fluid from the pressure chambers 5 more or less escape suddenly.
  • the support elements 3 per se are known. For reasons for clarity are therefore neither lines nor Throttles are shown in these support elements 3.
  • the present support element 3 can, for example Have annular pistons, so that the pressure chamber 5 is ring-like is trained. But it can also be a support element 3 trade with two pistons. One more way the implementation is shown in Fig. 1. It but does not come to the detailed training of individual support elements 3. The only important thing is that hydraulic fluid, which in and of itself for Pressurizing the support elements 3 in normal Operation is used when the rollers are quickly separated via the outlet channel 14 and the drain valve 15 very much can escape quickly.
  • FIG. 3 and 4 show examples of training of the drain valve 15.
  • the drain valve is as Slider valve 18 is formed. Shown in Fig. 3 is the position in which the slide valve 18 is closed is.
  • All slide valves 18 have a common valve slide 19 on, one for each drain valve Has through hole 20.
  • This through hole 20 can in a position of the valve slide 19 with the outlet channel 14 are brought into coincidence.
  • the through hole 20 does not coincide with the outlet duct 14. The hydraulic fluid can then not through the valve spool 19 or flow past it.
  • the valve housing 16 closes together with the valve slide 19 the mouth of the outlet duct 14.
  • the valve spool 19 is driven by two Piston-cylinder devices 21, 22 connected to the two axial ends of the valve spool 19 are arranged.
  • the valve spool 19 is at both ends each processed so that it itself as a piston 23, 24 acts, each inserted in a cylinder 25, 26 is. If the cylinder 25 (left in Fig. 3) under If pressure is set, the valve slide moves 19 to the right and closes the slide valves 18.
  • the piston-cylinder device 22 is under pressure is set, the valve spool 19 moves to the left and opens and the drain valves.
  • the piston-cylinder devices 21, 22 can use the same hydraulic fluid that too used to apply the pressure in the support elements becomes.
  • Fig. 4 shows another embodiment in which the Drain valves 15 have a closure piece 27, the in the manner of a plug in the mouth of the outlet duct 14 can be introduced.
  • the drain valves 15 shown in its open state.
  • the Closure piece 27 is in its by a compression spring 28 Open position pressed. Hydraulic fluid can then from the outlet duct 14 on the closure piece 27 flow past into a room 29 from which it is not shown Way in the annular space 17 between the roll shell 2 and carrier 4 arrives.
  • the closure piece 27 is an inclined surface 30th actuated by a slide 31, which is approximately in the axial direction is parallel to the carrier 4, as this is represented by arrows 32, 33. If the slider 31 is moved in the direction of arrow 32 the valves 15 closed. If the slide 31 in The direction of arrow 33 is moved, the valves 15 open. The same applies to the valves in Fig. 3.
  • a piston-cylinder device is also used to close the valves 21 at the left end of the slide 31 provided that, just like its corresponding counterpart in Fig. 3, applied with hydraulic fluid can be.
  • the slider 31 then moves to the right he acts on the inclined surface 30 of each Breech 27 and moves it radially inward to to close the mouth of the outlet channel 14.
  • closure piece 27 also on the mouth the end face surrounding the outlet channel 14. With the valve arrangement shown in Fig. 4 but also good tightness of the drain valve 15 guaranteed.
  • Both the valve spool 19 in Fig. 3 and the Slider 31 in Fig. 4 can consist of several similar trained sections are assembled. In particular the sections can be screwed together his. If necessary, you can also use spacers use between individual slide sections if this is necessary. With this configuration via the mechanical connection of the individual sections ensured that all valves 15, 18 simultaneously be opened or closed.

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  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolls And Other Rotary Bodies (AREA)
  • Paper (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)

Claims (18)

  1. Cylindre (1) réglable en flexion, comprenant une enveloppe de cylindre (2) soutenue sur un support (4) via des éléments de soutien (3), dans lequel des chambres à pression (5) sont prévues entre les éléments de soutien (3) et le support (4) et chaque chambre à pression (5) est reliée à une conduite d'alimentation (6), caractérisé en ce que chaque chambre à pression (5) communique avec un canal de sortie (14) prévu additionnellement à la conduite d'alimentation (6) et susceptible d'être obturé par une soupape d'échappement (15).
  2. Cylindre réglable en flexion selon la revendication 1, caractérisé en ce que le canal de sortie (14) débouche dans un espace (17) entre l'enveloppe de cylindre (2) et le support (4).
  3. Cylindre réglable en flexion selon l'une ou l'autre des revendications 1 et 2, caractérisé en ce que le canal de sortie (14) présente une résistance à l'écoulement plus faible que la conduite d'alimentation (6).
  4. Cylindre réglable en flexion selon l'une des revendications 1 à 3, caractérisé en ce que chaque chambre à pression (5) comprend une conduite d'alimentation propre (6) et un canal de sortie propre (14).
  5. Cylindre réglable en flexion selon l'une des revendications 1 à 4, caractérisé en ce que le canal de sortie (14) est en dérivation depuis un canal intermédiaire (9) entre la chambre à pression (5) et la conduite d'alimentation (6).
  6. Cylindre réglable en flexion selon l'une des revendications 1 à 5, caractérisé en ce que les soupapes d'échappement (15) sont posées à l'extérieur sur le support (4), tout au moins avec une partie de leur corps (16).
  7. Cylindre réglable en flexion selon l'une des revendications 1 à 6, caractérisé en ce que les soupapes d'échappement (15, 18) sont agencées avec un décalage d'environ 90° par rapport à la position des éléments de soutien (3).
  8. Cylindre réglable en flexion selon l'une des revendications 1 à 7, caractérisé en ce que toutes les soupapes d'échappement (15, 18) sont susceptibles d'être actionnées simultanément.
  9. Cylindre réglable en flexion selon la revendication 8, caractérisé en ce qu'il est prévu un dispositif d'actionnement (19, 31) commun pour toutes les soupapes d'échappement (15, 18).
  10. Cylindre réglable en flexion selon la revendication 9, caractérisé en ce que le dispositif d'actionnement (19, 31) est réalisé sous forme d'un tiroir.
  11. Cylindre réglable en flexion selon la revendication 10, caractérisé en ce que le tiroir (19, 31) est déplaçable sensiblement parallèlement à la direction axiale du support.
  12. Cylindre réglable en flexion selon l'une ou l'autre des revendications 10 et 11, caractérisé en ce que le tiroir (19, 31) comporte un agencement à piston-et-cylindre (28, 22) à titre d'entraínement.
  13. Cylindre réglable en flexion selon la revendication 12, caractérisé en ce que le tiroir (19, 31) est réalisé à l'une de ses extrémités au moins sous forme d'un piston (23, 24) agencé en déplacement dans un cylindre (25, 26).
  14. Cylindre réglable en flexion selon l'une des revendications 1 à 13, caractérisé en ce que les soupapes d'échappement sont réalisées sous forme de soupapes à tiroirs (18) avec des tiroirs de soupapes (19).
  15. Cylindre réglable en flexion selon la revendication 14, caractérisé en ce que les tiroirs de soupapes (19) des soupapes d'échappement (18) sont fixés les uns aux autres en direction axiale.
  16. Cylindre réglable en flexion selon l'une des revendications 1 à 13, caractérisé en ce que chaque soupape d'échappement (15) comprend un opercule (27) susceptible d'être déplacé en introduction dans l'embouchure du canal de sortie (14).
  17. Cylindre réglable en flexion selon la revendication 16, caractérisé en ce que le tiroir (31) agit sur les opercules (27) par l'intermédiaire d'une surface inclinée (30).
  18. Cylindre réglable en flexion selon l'une des revendications 1 à 17, caractérisé en ce que les soupapes d'échappement (15, 18) sont réalisées sous forme de soupapes à auto-ouverture.
EP97105205A 1996-04-24 1997-03-27 Rouleau à réglage de la flexion Expired - Lifetime EP0803607B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19616275 1996-04-24
DE19616275A DE19616275C2 (de) 1996-04-24 1996-04-24 Biegeeinstellwalze

Publications (3)

Publication Number Publication Date
EP0803607A2 EP0803607A2 (fr) 1997-10-29
EP0803607A3 EP0803607A3 (fr) 1998-12-23
EP0803607B1 true EP0803607B1 (fr) 2001-10-17

Family

ID=7792248

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97105205A Expired - Lifetime EP0803607B1 (fr) 1996-04-24 1997-03-27 Rouleau à réglage de la flexion

Country Status (3)

Country Link
US (1) US5980438A (fr)
EP (1) EP0803607B1 (fr)
DE (2) DE19616275C2 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19632769C2 (de) * 1996-08-14 2001-05-31 Kuesters Eduard Maschf Kalander mit einer Schnellöffnungseinrichtung
FI2920U1 (fi) * 1997-02-28 1997-05-29 Valmet Corp Järjestely kuormituskengillä varustetussa taipumakompensoidussa telassa
FI120419B (fi) 2006-11-24 2009-10-15 Metso Paper Inc Järjestely kenkätelan kuormituspaineen hallitsemiseksi
US20150150269A1 (en) * 2012-08-01 2015-06-04 Frito-Lay North America, Inc. Continuous process and apparatus for making a pita chip
SG2013096128A (en) * 2013-12-26 2015-07-30 Zimplistic Pte Ltd Sweeper mechanism for a food preparation appliance

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3820974C3 (de) * 1988-06-22 1996-03-21 Kuesters Eduard Maschf Dichtungsglied bzw. Walze
DE4011826C1 (fr) * 1990-04-12 1991-08-01 Eduard Kuesters Maschinenfabrik Gmbh & Co Kg, 4150 Krefeld, De
DE4426513C2 (de) * 1994-07-27 1997-07-17 Voith Sulzer Papiermasch Gmbh Durchbiegungseinstellwalze
DE4426512C2 (de) * 1994-07-27 1997-07-17 Voith Sulzer Papiermasch Gmbh Durchbiegungseinstellwalze
DE4429499C1 (de) * 1994-08-19 1995-11-16 Kleinewefers Gmbh Durchbiegungssteuerbare Walze für einen Kalander o. dgl.
DE4430268C1 (de) * 1994-08-26 1995-11-02 Kleinewefers Gmbh Durchbiegungssteuerbare Walze für einen Kalander o. dgl.
DE4430667C1 (de) * 1994-08-29 1996-02-08 Voith Sulzer Papiermasch Gmbh Durchbiegungsgesteuerte Walze

Also Published As

Publication number Publication date
EP0803607A2 (fr) 1997-10-29
EP0803607A3 (fr) 1998-12-23
DE59704920D1 (de) 2001-11-22
DE19616275C2 (de) 2002-09-12
US5980438A (en) 1999-11-09
DE19616275A1 (de) 1997-11-06

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